Furnace Transformer

Furnace Transformer Product Details：

General:

Furnace transformers are separated with normal power transformer with its characteristic of massive secondary currents. As an example a 30 MVA unit at 150 V would result in a secondary current of 115 kilo Ampere. For these high secondary currents special bushings are required to connect to the bus-bars. These bushings are specified with very specific arrangements to suit the bus-bar arrangement and cooling system. Furnace bus-bars are mostly water cooled. The coolers are either of the Oil Forced Air Forced (OFAF) or Oil Forced Water Forced (OFWF).

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Standards:

ØIEC-76 .1-1993 Power Transformers: General

ØIEC-76 .2-1993 Power Transformers: Temperature Rise

ØIEC-60076-3: 2000 Power Transformers Insulation Levels, Dielectric Tests And External Clearances In Air

ØIEC60076-4-2002 Power Transformers Part4 Guide To The Lighting Impulse And Switching Impulse Testing-Power Transformers And Reactors

ØIEC-60076-5:2000 Power Transformers Ability To Withstand Short Circuit